Rotary snap switch



May 5, 1925. 1,536,769.

a. CATLIN ROTARY SNAP SWITCH Filed June 16 1921 =l Lilllllf IMlllllh; mu";

' INYEIITOR 170 f7 C/Irun/ awiw ATTORNEYS v UNITED, STA

Patented May 5, 1925.

mm CATLIN,

comment, or narnenroar, GONNECTIGUKD,

To all whom it may concern:

Be it known that I, I Ioi'T CA'rnrN, a citizen of the United States of America, residing at Fair-field, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Rotary Snap Switches, of which the following is a specification.

My invention. relates to rotary snap 2 is a vertical section therethrough;

provided with a threaded extension '10. The

squared area 9 is engaged by the squared aperture 11) in the yoke 12,

spring 13 by the screw on the stem and bearing against theouter face of the yoke. lugs 15 and 16, preferably of different arcuate extent, which pass through correspond: ing holesl? and 18 in the switch cover 19,

which serves in the present construction as the means for rotating the switch spindle 8,

and thus operating the switch mechanism. The threaded end 10 of the switch spindle projects beyond the outer face of the cover 19 and receives the holding nut 20, prefer-.

ably provided with a cross slot 21 to accom-v modate a screw driver for turning the nut down on the stem. The cover is thus clamped between. the yoke 12 and the nut 20, and not only held in position -on the switch base but in operative engagement with the lugs 15 and 16 on the yoke 12 en-l gaging the switch spindle. A circular contour is imparted to the nut to minimize danger of tampering, or accidental removal of the nut from engaging position.

In order to facilitate the operation of; the

* PAT NT OFFICE;

or FAIRFIIEL'D,CONNECTICUT, assrenofa ro THE BRYANT nLncrn-ic 3 is adetachedperspective of certain which I which is heldv against outward pressure of the SWltOli ferrule 14: threaded.

' Offset from the latter are ROTARY SNAP swrron,

Application filed. rum; 16, 1221. swarm. 477,974.

A GOBEQBIATION OF CONNECTICUT.

switch by manipulation of the cover 19, the side wall of the latter is provided with ribs 22 extending outward from a peripheral shoulder 23 and affording a finger grip. The base portion 2 1 of the'cover is cylindri-' cal, and the shoulder 23 is located with parthe switch, so that the ribs 22,

appliance,

yoke lug, means ticular reference to the insulatingibase 5 of or the inwardly ofi'set portion 25 between the ribs 22, do not engage or interfere with the base or the conductors mounted thereon. An insulating lining 26 within the cover effecswae tively insulates the latter from possible con tact with the switch structure.

An indication of switch position is readily affordedby locating the ribs 22 at 90 intervals around the switch cover, and printing or impressing in the ribs suitable legends 27 indicative of the position and. connection afforded by the switch blades. Thus, the present switch hasfour distinct positions, in'one of which the circuit is broken, while in the other three connections are established to afford low, medium and high heat for .a

resistance unit suitably connected to the switch. The proper position of the cover with respect to the switch mechanism is assured by the different size of the lugs 15 and 16 on the yoke 12, and the correspondingly different sized holes17 and 18 in the switch cover. Also associated with the switch is an indicating arrow 28, which may be placed upon any suitable fixed member, such as the frame 290i a range or heater pendent ring30 mounted on the frame, or on the fixed base of the switch, where the latter is visible. locating lug 31 is provided to definitely locate the arrow 28 with respect to the ribs 22.

The particular contour of the switch or may be formed upon an inde- I In any event, a suitable I cover, and the particular. foru'iation of the ribs and nut 20 may be varied in many ways without departing from what I claim as my invention. 3 y y 1 I claim I L A rotary insulatingbase, a switch mechanism mounted thereon and comprising a rotary switch spindle, and a yoke with offset lug on said spindle, in combination with a switch cover plerced to receive said switch spindle and snap switch comprising an for securing the cover in lug-engaging position, and means on the cover for indicating the position of the switch mechanism.

2. A rotary snap and having said threaded end, a yoke upon said noncirenlar area in the spindle lugs at its opposite ends, a switch cover pierced to receive said lugs to establish driving. relation between the cover and the switch comprising a rotary switchspinlle threaded at one enda non-circular" area ad acent and having offset spindle, means exterior to the cover and en gagingthe threaded end of the spindle for holding'th'e cover in engagement with said yoke lugs, together with means associated with saidcover for indicating the circuit connections established by theswitch on rotation of said cover.

Intestimony-whereof I have signed my name to this specification.

HO Y l CATLIN. 

